You’ll never know when you’ll be needing a jump starter for your car until the point when you’re caught with a dead battery. Rather than wait for AAA or for a passer-by, who may or may not stop to help, just equip yourself with the JNC660 jump starter from Clore Automotive. Offering up to 1,700 amperes of peak current, the device has a 48-inch #4 cable for heavy-duty operation. When not reviving dead batteries, the JNC660 can also serve as an external power supply for 12V devices and the battery indicator makes sure you don’t drain the jump starter as well. $100.